Maths problem: how to do, thanks?
回答 (1)
2020-11-08 6:04 pm
✔ 最佳答案
AB = AC∴ ∠ABC = ∠ACB
∴ ∠A = 180° - 62° × 2 = 56°
BD 是 B 點到 AC 邊的高
∴ ∠ADB = 90°
∴ ∠ABD = 180° - 56° - 90° = 34°
收錄日期: 2021-04-24 08:04:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201108070425AA64Td0